Gas-engine



J. A. CHARTER.

GAS ENGINE,

APPLICATION FILED MAY 20, I920- 1,396,506, Patented Nov. 8, 1921.

Mani??- Jairrzcs Q. Cmrr the engine PATENT OFFlCE.

JAMES A. CHARTER, OF (ZHICAGO ILLINOIS.

GAS-ENGINE.

Specification of Letters Patent.

. Patented Nov. 8, 1921.

Original application filed September 15, 1919, Serial No. 323,888. Divided and this application filed may 20, 1920. Serial No. 382,874.

1" nZZ whom it may concern:

Be it known that I, JAMES A. CHARTER, residing at Chicago, in the county of Cook and State of Illinois, a citizen of the United States of America, have invented a certain new and useful Improvement in Gas- Engines, of which the following is a specification.

This-invention relates to internal combustion engines, particularly those using heavy grades of fuel oil. As is more fully set forth and claimed in my original application. Serial No. 323,888 of which this is a division, it is well understood in the art that when the normal operation of an engine sucking air into itself is relied upon to have th ingoing air draw in fuel oil through the carbureter, there are one or more periods,

particularly as a large volume of air is be ing drawn in, when the effective oil drawing power is very slight, with the result that leavy oil if drawn in at all will not be properly atomized.

The object of this invention is to provide an engine of this class with independent mechanism for forcin oil into the engine in. properly, finely divided condition whenever and wherever it is, by prior investiga tion, decided that it is wanted.

The invention consists in providing at a suitable point in the engine intake an especially advantageous atomizing or injecting apparatus controlled entirely independently of the engine itself but if desired driven by itself which will at predetermined times or points in the movement of the engine deliver the properly, finely divided oil into the engine. The invention further consists in valve mechanism for controlling this independent injecting or atomizing mechanism to, as is desire vary the quantity of materials delivered by it to the engine, the device being usable on any sort of liquid fuel, such as gasolene, kerosene, alcohol, or any of the fancy patented mixtures now on the market.

More particularly the invention consists in many features and details of construction hereafter more fully set forth in the specification and claims.

Referring to the drawings in which similar numerals indicate the same parts throughout the several views,

Figure 1 is a vertical sectional view of the upper portion of a conventional form of puppet valve mechanism having the device of this invention applied thereto, showing the herein preferred construction of valve mechanism for controlling the supply of air to the atomizer or injector.

Fig. 2 is a detail of a preferred. form of cam drive mechanism for actuating the valve shown in Fig. l.

The mechanism of this invention may he applied to engines of this type of any number of cycles and any number of cylinders without departing from the invention. In the drawings only a single cylinder is shown. In the case of multiple cylinder engines the mechanism here shown. or essential parts thereof would be duplicated.

In the construction shown in Fig. 1 an air nozzle is introduced into air intake passage 12 leading to a puppet valve 14.- leading' to the combustion space 16 at the top of cylinder 18 in which piston 20 reciprocates vertically in the ordinary manner. As is more fully set forth and claimed in said original application, nozzle 1.0"is directed over a vertically pointed oil nozzle 22 constantly supplied with oil from a chamber 24 and pipe 26 without novelty herein and therefore not detailed.

Air is supplied to this nozzle 10 through a pipe 28 from any suitable source, not shown; for. instance, by an air pump mounted on and driven by the engine, as shown and described in said original application. Communication between pipe 28 and the nozzle is controlled by a reciprocatable valve 30 seatable at 32 in the obvious manner. Valve 30 is carried on a rigid arm 34 which in turn carries a roller 36 supported by a.

cam 38 driven by a shaft 40. This shaft 40, shown in detail in Fig. 2, is rotatably and reciprocatably mounted in bearings 42. The shaft is driven from its right hand end by a spline gear mechanism, the particular form of which shown in the drawing consists of a spline 44- on shaft 40 sliding through a gear 46 meshing with another gear 4 8 driven by shaft 50 energized by power from any suitable source. The shaft is reciprocata-blc through a lever mechanism 52 pivoted at 54- which may be either governor or hand 0perated as desired. A conventional governor mechanism 56 is shown. Between the bearings 42 shaft 40 carries the cam 38, which has an inclined face 58 shown in Fig. 2, but not in Fig. 1, adapted to vary its effective diaineter as regards wheel 36 when the shaft 40 and consequently the cam is shifted lengthwise of the shaft and to thereby vary the stroke and consequently the opening created by valve 30 and thereby vary the quantity and the period during which air is delivered by nozzle 10 into the cylinder.

The special advantages of applying this invention to combustion engine cylinders are that large ports and passageways may be used for delivering air to the engine so that there is no question whatever aboutthe engine having a maximum volume of air in it when the piston has completed its down stroke, and that higher velocity air is separately provided for atomizing heavy fuels which are not adequately handled by the normal suction of the piston heretofore referred to.

It is to be noted that the independent air nozzle is located in immediate proximity to the engine cylinder so that the atomized fuel is delivered through the usual valve controlled cylinder port directly into the combustion space of the cylinder instead of into the manifold as in prior constructions. This direct delivery has the advantage that the fuel oils donot have a chance to condense in the manifold and does away with all frosting of the intake pipe. lt permits the use of heavy cheap oils."

Having thus described my invention, what I. claim as new and desire to secureby Letters Patent is:

1. In mechanism of the class described, in combination with an engine and its intake passage, an independent air nozzle entering said passage adapted to independently deliver air through said passage directly to the engine cylinder, a fuel supply nozzle adja cent to said independent air nozzle adapted to deliver fuel to the current of air delivered bysaid nozzle, a valve controlling the admission of air to said air nozzle, a

rotatable and reciprocatable cam mechanism for opening and closing said valve so shaped that in different positions it varies the opening of the valve, and means for rotating said cam mechanism.

2. 'n mechanism of the class described, in combination with an engine and its intake passage, an independent air nozzle entering said passage adapted to independently deliver air through said passage directly to the engine cylinder, a fuel supply-nozzle adjacent to said independent air nozzle adapted to deliver fuel to the current of air delivered by said nozzle, a valve controlling the admission of air to said air nozzle, a ro atable and reciprocatable cam mechanism for opening and closin said valve so shaped that in different. positions it varies the opening of the valve, and means for reciprocating said cam.

3. In mechanism of the class described, in combination with an engine and its intake passage, an independent air nozzle entering said passage adapted to independently deliver air through said passage directly to the engine cylinder, a fuel supply nozzle adjacent to said independent air nozzle adaptedto deliver fuel to the current of air delivered by said nozzle, a valve controlling the admission of air to said air nozzle, a rotatable and reciprocatable cam mechanism vfor opening and closing said valve so shaped that in different positions it varies the opening of the valve, and means for independently rotating and reciprocating said cam.

ln Witness whereof, I have hereunto subscribed my name. i

JAMES A. CHARTER. l fitnesses Dwron'r ll. CHEEVER, ANNA ROSENTHAL. 

